I have been owning guinea pigs for three years now and I started each with oxbow brand pellets but each time I have tried none will eat the pellets, so my bf would buy the vita Kraft brand and that has mixed stuff with the pellets, and they eat it all including the pellets. Why is this? I have tried numerous times to get them on the healthier pellet diet but with no success, what tips or methods can I use to get them to eat pellets.
Thank you :)

Pellets aren't the most important thing in their diets, and the bad stuff in Vita Kraft outweighs the good. If you're using the VitaKraft Complete guinea pig food, it's made of alfalfa, and that has way too much calcium for adult guinea pigs.

I'd just throw the VitaKraft stuff out for the birds, and feed them only Oxbow or KMS Hayloft pellets. They're good quality, and don't contain calcium carbonate, which has been implicated in bladder stones.

You can feed them good quality veggies, preferably a wide variety of colors, such as radicchio, red or yellow peppers, etc. If there's a veggie they particularly like, you can dice it into tiny, tiny pieces and mix it in with the pellets. That may encourage them to try them.

My pigs went without pellets for years because of bladder problems. Good quality hay (NOT the stuff you buy in small bags from pet stores and places like Walmart) and good quality veggies make a pretty good diet for them.

Thank you, the vita kraft it is is the vitakraft vita nature. They get daily hay (as that’s main diet) and daily veggies, I could try the oxbow pellets again, maybe add veggies in it?
I want the best for my piggies and these three years I have tried and still willing to give the best pellets

That's better than the Complete stuff. It's at least made with timothy. But it does have calcium carbonate in it, and that would be enough for me to turn it down. The only two in the U.S., that I know of, that don't use it as the calcium source are Oxbow and KMS Hayloft.

I wouldn't feed the Vita Kraft at all, and just put out the Oxbow (or KMS if you decide to go that route, which I recommend). If your pigs are good hay eaters, they won't need much of the pellets anyway.

Two other brands that do not contain calcium carbonate are Zupreem (which is timothy-based but also contain a small amount of alfalfa), and a lesser-known brand made by Sherwood Animal Health. My guys are picky; I have two who like Oxbow well enough, but the other three won't touch it. I stopped using KMS a couple of years ago when shipping rates on it went up, but I may eventually have to re-consider.

Right and sadly I think that’s why they like the vitalraft cause it tastes great just something I don’t want to give them, they are all happy and healthy just want to give a better choice of pellet for them

They'll definitely be picky with the "healthy" stuff at first. Look at it this way, seed mixes are equivalent to chips and trail mixes with the candy inside. Oxbow is more like a healthy cracker, lol. So it'll take a while for them to actually WANT to eat the oxbow pellets. Did you try following the transition instructions that are on the back of the Oxbow bag? That may help :)

Actually, the best way to do it is to just take away the crappy stuff and give the good stuff. And then wait them out. They won't starve. As long as you give even the smallest amount of the crappy stuff, they will eat that and leave the other.

Double check the Sherwood pellets. I bought them thinking they were great, but one of my boys started having grit in his pee and he had never had an issue with calcium before. I went back and checked the bag, and the calcium a higher amount than most brands for piggos. I instantly switched him off of it, and haven't had an issue since.